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用压滤法分离了龄期分别为半年和一年的硅酸盐水泥和低碱度水泥硬化浆体孔隙中的液相。溶液中钙的可能存在形态为Ca~(2+)、Ca(OH)~+和Ca(OH)_2,它们之间的含量比例取决于溶液的OH~-浓度。对玻璃起侵蚀作用的主要为Ca(OH)~+,而Ca~(2+)和Ca(OH)_2不起明显的侵蚀作用。28d后,中碱玻璃中钠的溶出百分率为抗碱玻璃的3～4倍;而在低碱度水泥浆体中,两种玻璃中钠的溶出量都不大,中碱玻璃中钠在180d内的溶出百分率也只有在硅酸盐水泥浆体中同龄期溶出率的1/12。对硅酸盐水泥浆体孔隙溶液中钙的饱和状况作了进一步的讨论,所得的结论与Diamond的不同,孔隙溶液一直为Ca(OH)_2所饱和,而不是在60～90d后钙从溶液中消失。
The liquid phases in the pores of the Portland cement and the low alkalinity cement hardened paste were separated by pressure filtration method. The ages were six months and one year respectively. The possible forms of Ca in solution are Ca 2+, Ca(OH)~+, and Ca(OH) _2. The content ratio between them depends on the OH~- concentration of the solution. The main corrosion effect on glass is Ca(OH)~+, while Ca~(2+) and Ca(OH)2 do not play a significant role in erosion. After 28 days, the percentage of sodium in the alkali glass was 3 to 4 times that of the alkali-resisting glass. In the low-alkali cement slurry, the amount of sodium in the two glasses was not large. The sodium in the alkali glass was 180d. The percentage of dissolution inside was only 1/12 of the same age dissolution rate in the Portland cement slurry. The calcium saturation in the pore solution of Portland cement paste was further discussed. The conclusion is different from that of Diamond. The pore solution was saturated with Ca(OH)2 instead of calcium from solution after 60-90 days. Disappeared.